package com.wy.controller;

import cn.hutool.json.JSONObject;
import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;

import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.wy.common.AliPayConfig;
import com.wy.entity.UserAlipay;
import com.wy.entity.UserInfo;
import com.wy.service.UserAlipayService;
import com.wy.service.UserInfoService;
import com.wy.util.IdWorker;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.Map;

/**
 * @Author:王渝
 * @Date: 2022/11/29  16:32
 * @Version 1.0
 */
@Slf4j
@RestController
@RequestMapping("/alipay")
public class AliPayController {

    private static final String GATEWAY_URL = "https://openapi.alipaydev.com/gateway.do";
    private static final String FORMAT = "JSON";
    private static final String CHARSET = "UTF-8";
    //签名方式
    private static final String SIGN_TYPE = "RSA2";

    @Resource
    private AliPayConfig aliPayConfig;

    @Autowired
    private UserInfoService userInfoService;

    @Autowired
    private UserAlipayService userAlipayService;

//    @Resource
//    private OrdersMapper ordersMapper;
    //http://localhost/alipay/pay?traceNo=编号&totalAmount=价格&subject=商品
    @GetMapping("/pay") // &userId=xxx&&totalAmount=xxx
    public void pay( UserAlipay aliPay, HttpServletResponse httpResponse, HttpSession session) throws Exception {
        log.info("充值");
        Long userId = (Long) session.getAttribute("userId");
        if(userId == null || !userId.equals(aliPay.getUserId())){
            return;
        }
        session.setAttribute("userId",aliPay.getUserId());

        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API
        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),
                aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);

        // 2. 创建 Request并设置Request参数
        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();  // 发送请求的 Request类
        request.setNotifyUrl(aliPayConfig.getNotifyUrl());
        JSONObject bizContent = new JSONObject();
        bizContent.set("out_trade_no", new IdWorker(1,1,1).nextId() + " " + userId);  // 我们自己生成的订单编号
        bizContent.set("total_amount", aliPay.getTotalAmount()); // 订单的总金额
        bizContent.set("subject","充值余额");   // 支付的名称
        bizContent.set("product_code", "FAST_INSTANT_TRADE_PAY");  // 固定配置

        bizContent.set("user_id", aliPay.getUserId());  // 用户id
        //bizContent.set("amount", aliPay.getTotalAmount()); // 订单的总金额
        request.setBizContent(bizContent.toString());

        // 执行请求，拿到响应的结果，返回给浏览器
        String form = "";
        try {
            form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        httpResponse.setContentType("text/html;charset=" + CHARSET);
        httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面
        httpResponse.getWriter().flush();
        httpResponse.getWriter().close();
    }

    @PostMapping("/notify")  // 注意这里必须是POST接口
    public String payNotify(HttpServletRequest request) throws Exception {
        if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {
            System.out.println("=========支付宝异步回调========");

            Map<String, String> params = new HashMap<>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (String name : requestParams.keySet()) {
                params.put(name, request.getParameter(name));
                // System.out.println(name + " = " + request.getParameter(name));
            }

            String outTradeNo = params.get("out_trade_no");


            String gmtPayment = params.get("gmt_payment");
            String alipayTradeNo = params.get("trade_no");

            String sign = params.get("sign");
            String content = AlipaySignature.getSignCheckContentV1(params);
            boolean checkSignature = AlipaySignature.rsa256CheckContent(content, sign, aliPayConfig.getAlipayPublicKey(), "UTF-8"); // 验证签名
            // 支付宝验签
            if (checkSignature) {

                // 验签通过
                String[] s = outTradeNo.split(" ");
                System.out.println("交易名称: " + params.get("subject"));
                System.out.println("交易状态: " + params.get("trade_status"));
                System.out.println("支付宝交易凭证号: " + s[0]);
                System.out.println("商户订单号: " + params.get("out_trade_no"));
                System.out.println("交易金额: " + params.get("total_amount"));
                System.out.println("买家在支付宝唯一id: " + params.get("buyer_id"));
                System.out.println("买家付款时间: " + params.get("gmt_payment"));
                System.out.println("买家付款金额: " + params.get("buyer_pay_amount"));
                System.out.println("用户id: " + s[1] );

                UserAlipay userAlipay = new UserAlipay();
                DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
                userAlipay.setUserId(Long.valueOf(s[1]) );
                userAlipay.setTradeNo(params.get("trade_no"));
                userAlipay.setTotalAmount(new BigDecimal(params.get("total_amount")));
                userAlipay.setOutTradeNo(Long.parseLong(s[0]));
                userAlipay.setGmtPayment(LocalDateTime.parse(params.get("gmt_payment"),df));
                userAlipay.setBuyerPayAmount(new BigDecimal(params.get("buyer_pay_amount")));
                userAlipay.setBuyerId(Long.parseLong(params.get("buyer_id")));

                userAlipayService.save(userAlipay);
                LambdaUpdateWrapper<UserInfo> lambdaUpdateWrapper = new LambdaUpdateWrapper<>();
                lambdaUpdateWrapper.eq(UserInfo::getUserId,userAlipay.getUserId());
                UserInfo user = userInfoService.getById(userAlipay.getUserId());
                user.setBalance(user.getBalance().add(userAlipay.getTotalAmount()));
                UserInfo newU = new UserInfo();
                newU.setBalance(user.getBalance());
                userInfoService.update(newU,lambdaUpdateWrapper);
                /*// 查询订单
                QueryWrapper<Orders> queryWrapper = new QueryWrapper<>();
                queryWrapper.eq("order_id", outTradeNo);
                Orders orders = ordersMapper.selectOne(queryWrapper);

                if (orders != null) {
                    orders.setAlipayNo(alipayTradeNo);
                    orders.setPayTime(new Date());
                    orders.setState("已支付");
                    ordersMapper.updateById(orders);
                }*/
            }
        }
        return "success";
    }
}